@article{AFL-J-2011-KariX12,
	author        = "Lila Kari and Zhi Xu",
	doi           = "10.1142/S0129054112400540",
	journal       = "{International Journal of Foundations of Computer Science}",
	number        = 6,
	pages         = "1307--1322",
	publisher     = "{World Scientific}",
	title         = "{De Bruijn Sequences Revisited}",
	volume        = 23,
	year          = 2012,
}